상아질 봉쇄 시기와 임시 수복 방법이 상아질과 복합레진의 결합강도에 미치는 영향
Effect of timing of dentin sealing and provisional restoration method on bond strength of composite resin to dentin
장지현, 최영중, 이빈나, 장훈상, 황윤찬, 오원만, 황인남,
소속 상세정보
장지현 ( Jang Ji-Hyun ) - 강동경희대학교 치과병원 치과보존과
최영중 ( Choi Young-Jung ) - 전남대학교 치과대학 치과보존학교실
이빈나 ( Lee Bin-Na ) - 전남대학교 치과대학 치과보존학교실
장훈상 ( Chang Hoon-Sang ) - 전남대학교 치과대학 치과보존학교실
황윤찬 ( Hwang Yun-Chan ) - 전남대학교 치과대학 치과보존학교실
오원만 ( Oh Won-Mann ) - 전남대학교 치과대학 치과보존학교실
황인남 ( Hwang In-Nam ) - 전남대학교 치과대학 치과보존학교실
KMID : 1035320150420040353
Abstract
The purpose of this study was to evaluate the effect of timing of dentin sealing and provisional restoration methods on the bond strength of composite resin to dentin. Flat dentin surfaces were prepared and the teeth were divided into three groups: control, resinrestoration with immediate dentin sealing (IDS), and resin restoration with delayed dentin sealing (DDS). For the control group, a dentin surface was bonded by using dual-curing dentin adhesive (Excite DSC) and restored with resin immediately. For the IDS groups, a dentin was sealed with OptiBond FL (OB) or Hybrid Coat (HC), and it was restored with following 3 provisional restoration methods: SQ/PQ/CQ {SQ, water-soluble separator (SEP) + provisional resin; PQ, petroleum jelly + provisional resin; CQ, temporary cement (Cavitec) + provisional resin}. For the DDS groups, a dentin was temporized with 2 provisional restoration methods: Q/CQ (Q, provisional resin only) without dentin sealing. After a week, the provisional restoration was removed and cleaned. The treated dentin surface was bonded using Excite DSC and restored with resin, followed by microtensile bond strength (μTBS) tests. The μTBS of control and the IDS-OB groups were not significantly different (P>0.05). The DDS groups presented lower μTBS than control and the IDS-OB groups (P<0.05). The IDS-HC groups were exhibited lowest μTBS than other groups (P<0.05). There was no significant difference in the μTBS regardless of provisional restorative method in the IDS groups (P>0.05). However, using CQ significantly lower the μTBS than using Q in the DDS groups (P<0.05). IDS with a etch-and-rinse type dentin bonding agent improved the bond strength. The use of ZOE-containing cement on the unsealed dentin surface decreased the μTBS.
키워드
immediate dentin sealing; delayed dentin sealing; microtensile bond strength; composite resin restoration; provisional restoration
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